This is a 12 mm centerfire Perrin D.A. 6 shot revolver. It is matching serial number 604. These revolvers were finished in the white. The bore is very good bright and shiny with strong rifling. The mechanical function is very good and tight. No rust or pitting on the metal and the wood grip is very good condition. The U.S. Government ordered 1000 but only 550 were delivered. Soldiers purchased many privately. This is a D.A. 12 mm centerfire cartridge, 6 shot revolver with a 5.75” barrel. The condition is very fine plus with over 80% original finish. At the time this was cutting edge technology. Most every thing else was percussion muzzle and breech loading weapons on both sides.